APALS-AIR, All Purpose Adhesive Light Strips with Active Illumination Reflective Technology, is a micro-thin LED light strip that operates in three modes; fast strobe, slow strobe and steady on. These are great for jogging, cycling, water sports, motorcycles, skateboarding or even walking the dog, as they can be seen from up to 1/4 mile. They are 1 x 2.5-Inch (about the size of a band aid) and they have a heavy duty adhesive back that can be placed anywhere, e.g. on the back of running shoes, on a running shirt, life jacket, the bottom of a skateboard, helmet or hat. They have an operation time from 35 to 70 hours. There are two APALS-AIR in each package. Replacement light strips are available.